(Articulationes Digitorum Pedis; Articulations of the Phalanges)
The interphalangeal articulations are ginglymoid joints, and each has a plantar and two collateral ligaments.
The arrangement of these ligaments is similar to that in the metatarsophalangeal articulations: the Extensor tendons supply the places of dorsal ligaments.
The only movements permitted in the joints of the digits are flexion and extension; these movements are more extensive between the first and second phalanges than between the second and third. The amount of flexion is very considerable, but extension is limited by the plantar and collateral ligaments.